84344378 has 8 divisors (see below), whose sum is σ = 133958772. Its totient is φ = 39691456.

The previous prime is 84344341. The next prime is 84344387. The reversal of 84344378 is 87344348.

It can be written as a sum of positive squares in 2 ways, for example, as 74528689 + 9815689 = 8633^2 + 3133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×84344378² = 14227948200413768, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240325 + ... + 1240392.

Almost surely, 2^84344378 is an apocalyptic number.

84344378 is a deficient number, since it is larger than the sum of its proper divisors (49614394).

84344378 is a wasteful number, since it uses less digits than its factorization.

84344378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480736.

The product of its digits is 258048, while the sum is 41.

The square root of 84344378 is about 9183.9195336196. The cubic root of 84344378 is about 438.5495940028.

The spelling of 84344378 in words is "eighty-four million, three hundred forty-four thousand, three hundred seventy-eight".